Model catalog

Supported models, endpoints, and clients

Check compatibility before signing up. NexRelay keeps GPT-style, Claude-style, and Gemini-style traffic under one prepaid wallet and one usage ledger.

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OpenAI-compatible

Primary endpoint

/api/v1/chat/completions

Alternate endpoint

/api/v1/responses

OpenAI SDK drop-in usage, coding agents, and apps that need a familiar Chat Completions surface.

Models

gpt-5.2gpt-5.3gpt-5.4gpt-5.5

Common clients

CodexCursorClineChatboxOpenAI SDK

Claude-compatible

Primary endpoint

/v1/messages

Alternate endpoint

/api/v1/messages

Anthropic-style clients that expect Messages API streaming and Claude model names.

Models

claude-haiku-4-5claude-sonnet-4-6claude-opus-4-7

Common clients

Claude CodeClineAnthropic SDK-style clients

Gemini-compatible

Primary endpoint

/v1beta/models

Alternate endpoint

/api/v1beta

Tools that discover models through Gemini-style endpoints while keeping one prepaid wallet.

Models

gemini-2.5-flashgemini-2.5-pro

Common clients

Gemini-compatible toolscustom base URL clients

Compatibility checklist

What to verify before recharge

The strongest conversion path is letting a developer confirm their client works first, then asking them to recharge.

Trial credits before payment

Prepaid wallet stops at zero

Per-key budgets and limits

Request-level usage ledger

OpenAI, Claude, and Gemini-style endpoints

Works with 9+ client types